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HEA > ASCA > Scientific Results > Particle Acceleration

(2) Identification of particle acceleration sites

ASCA has discovered evidence that particles are accelerated to super-high energies in the remnants of a supernova that appeared in the year 1006. This has become the most powerful candidate for a cosmic ray acceleration site. Explosion of SN1006X-rays from the earliest period of the universe have been detected. This had been possible because of the dense gasses that surround such stars. This indicates that violent particle acceleration and heating occurred in the birth of those stars also. It has been confirmed that the same kind of particle acceleration occurs at the origin of giant stellar jets in a group of active galaxies called a blazer. It has been determined that the magnetic field there is from 0.1 to 1 gauss.

We discovered X-rays, in radio lobes of several galaxies, for the first time. These X-rays are generated by reverse Compton scattering high-velocity electrons of cosmic background microwave radiation. The magnetic field strength was determined.

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Next: (3) The origin of cosmic X-ray background


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